US2549149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay control
Assignee: Electric Controller and Manufacturing Co LLC
•
Filing: 1945-04-25
•
Granted: 1951-04-17
•
Expires: 1965-04-25
Abstract
No abstract record available.
Inventors
- 👤 Paul G White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:43
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/288; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US981919A
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US1555893A
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US1758255A
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US1939609A
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US2080273A
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US2187637A
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US2279849A
Cited
US2317888A
Cited
US2339750A
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US2375229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |